public class CastToList extends UnaryExpression
operandEFFECTIVE_BOOLEAN_VALUE, EVALUATE_METHOD, EVENT_FEED_METHOD, INHERITED_CONTEXT, INSPECTION_CONTEXT, ITEM_FEED_METHOD, ITERATE_METHOD, locationId, MAX_SEQUENCE_LENGTH, MAX_STRING_LENGTH, NAVIGATION_CONTEXT, NODE_VALUE_CONTEXT, PROCESS_METHOD, PUSH_SELECTION, staticProperties, UNBOUNDED_LOWER, UNBOUNDED_UPPER, W3C_CONSUMING, W3C_FREE_RANGING, W3C_GROUP_CONSUMING, W3C_MOTIONLESS, WATCH_METHOD| Constructor and Description |
|---|
CastToList(Expression source,
ListType targetType,
boolean allowEmpty) |
| Modifier and Type | Method and Description |
|---|---|
static AtomicSequence |
cast(CharSequence value,
ListType targetType,
NamespaceResolver nsResolver,
ConversionRules rules)
Cast a string value to a list type
|
int |
computeCardinality()
Get the static cardinality of the expression
|
int |
computeSpecialProperties()
Determine the special properties of this expression
|
Expression |
copy()
Copy an expression.
|
boolean |
equals(Object other)
Is this expression the same as another expression?
|
void |
explain(ExpressionPresenter out)
Diagnostic print of expression structure.
|
ExpressionCompiler |
getExpressionCompiler()
Return the compiler of the CastToList expression
|
ItemType |
getItemType(TypeHierarchy th)
Get the static type of the expression
|
NamespaceResolver |
getNamespaceResolver() |
ListType |
getTargetType() |
int |
hashCode()
get HashCode for comparing two expressions.
|
boolean |
isAllowEmpty() |
SequenceIterator |
iterate(XPathContext context)
Evaluate the expression
|
Expression |
optimize(ExpressionVisitor visitor,
ExpressionVisitor.ContextItemType contextItemType)
Perform optimisation of an expression and its subexpressions.
|
Expression |
simplify(ExpressionVisitor visitor)
Simplify the expression
|
String |
toString()
The toString() method for an expression attempts to give a representation of the expression
in an XPath-like form, but there is no guarantee that the syntax will actually be true XPath.
|
Expression |
typeCheck(ExpressionVisitor visitor,
ExpressionVisitor.ContextItemType contextItemType)
Type-check the expression
|
displayOperator, getBaseExpression, iterateSubExpressions, promote, replaceSubExpressionaddToPathMap, adoptChildExpression, checkForUpdatingSubexpressions, checkPermittedContents, computeDependencies, computeStaticProperties, doPromotion, dynamicError, effectiveBooleanValue, evaluateAsString, evaluateItem, evaluatePendingUpdates, explain, getCardinality, getColumnNumber, getColumnNumber, getConstructType, getContainer, getDependencies, getEvaluationMethod, getExecutable, getExpressionName, getHostLanguage, getImplementationMethod, getIntegerBounds, getIntrinsicDependencies, getLineNumber, getLineNumber, getLocationId, getLocationProvider, getObjectName, getProperties, getProperty, getPublicId, getSlotsUsed, getSpecialProperties, getStreamability, getStreamingAdjunct, getSystemId, getSystemId, hasVariableBinding, implementsStaticTypeCheck, isSubtreeExpression, isUpdatingExpression, isVacuousExpression, iterateEvents, iterateSubExpressionInfo, markTailFunctionCalls, process, resetLocalStaticProperties, setContainer, setEvaluationMethod, setFiltered, setFlattened, setLocationId, staticTypeCheck, suppressValidation, toPattern, toStreamingPattern, typeErrorpublic CastToList(Expression source, ListType targetType, boolean allowEmpty)
public boolean isAllowEmpty()
public ListType getTargetType()
public NamespaceResolver getNamespaceResolver()
public Expression simplify(ExpressionVisitor visitor) throws XPathException
simplify in class UnaryExpressionvisitor - an expression visitorXPathException - if an error is discovered during expression
rewritingpublic Expression typeCheck(ExpressionVisitor visitor, ExpressionVisitor.ContextItemType contextItemType) throws XPathException
typeCheck in class UnaryExpressionvisitor - an expression visitorcontextItemType - the static type of "." at the point where this expression is invoked.
The parameter is set to null if it is known statically that the context item will be undefined.
If the type of the context item is not known statically, the argument is set to
Type.ITEM_TYPEXPathException - if an error is discovered during this phase
(typically a type error)public Expression optimize(ExpressionVisitor visitor, ExpressionVisitor.ContextItemType contextItemType) throws XPathException
This method is called after all references to functions and variables have been resolved to the declaration of the function or variable, and after all type checking has been done.
optimize in class UnaryExpressionvisitor - an expression visitorcontextItemType - the static type of "." at the point where this expression is invoked.
The parameter is set to null if it is known statically that the context item will be undefined.
If the type of the context item is not known statically, the argument is set to
Type.ITEM_TYPEXPathException - if an error is discovered during this phase
(typically a type error)public int computeCardinality()
computeCardinality in class UnaryExpressionStaticProperty.ALLOWS_ZERO_OR_ONE,
StaticProperty.EXACTLY_ONE, StaticProperty.ALLOWS_ONE_OR_MORE,
StaticProperty.ALLOWS_ZERO_OR_MOREpublic ItemType getItemType(TypeHierarchy th)
getItemType in class UnaryExpressionth - the type hierarchy cachepublic int computeSpecialProperties()
computeSpecialProperties in class UnaryExpressionStaticProperty.NON_CREATIVE.public Expression copy()
copy in class Expressionpublic SequenceIterator iterate(XPathContext context) throws XPathException
iterate in class Expressioncontext - supplies the context for evaluationXPathException - if any dynamic error occurs evaluating the
expressionpublic static AtomicSequence cast(CharSequence value, ListType targetType, NamespaceResolver nsResolver, ConversionRules rules) throws XPathException
value - the input string valuetargetType - the target list typensResolver - the namespace context, needed if the type is namespace-sensitiverules - the conversion rulesXPathException - if the conversion failspublic boolean equals(Object other)
equals in class UnaryExpressionpublic int hashCode()
hashCode in class UnaryExpressionpublic ExpressionCompiler getExpressionCompiler()
getExpressionCompiler in class Expressionpublic String toString()
toString in class UnaryExpressionpublic void explain(ExpressionPresenter out)
explain in class UnaryExpressionout - the expression presenter used to display the structureCopyright (c) 2004-2013 Saxonica Limited. All rights reserved.